package com.sky.mapper.user;

import com.sky.pojo.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Update;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    /**
     * 条件查询
     *
     * @param shoppingCart
     * @return
     */
    List<ShoppingCart> selectByConditon(ShoppingCart shoppingCart);

    /**
     * 如果商品不是第一次添加,更新商品数量
     *
     * @param id
     */
    @Update("update shopping_cart set number=number+1 where id =#{id}")
    void addNumberById(Long id);

    /**
     * 插入购物车数据
     *
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            " values (#{name},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{image},#{createTime})")
    void save(ShoppingCart shoppingCart);

    /**
     * 根据用户id删除购物车数据
     *
     * @param currentId
     */
    @Delete("delete from shopping_cart where user_id = #{currentId}")
    int deleteByUserId(Long currentId);
}
